Volume 2, Issue 4 (Jul 2005) IJMSE 2005, 2(4): 9-15 | Back to browse issues page

SHEIKHI MOGHADDAM K., ATAIE A.. SYNTHESIS OF ULTRA-FINE PARTICLES OF BAFE₁₂O₁₉ BY CO- PRECIPITATION ROUTE USING CHLORIDE/NITRATE PRECURSORS. IJMSE 2005; 2 (4) :9-15
URL: http://ijmse.iust.ac.ir/article-1-64-en.html

SYNTHESIS OF ULTRA-FINE PARTICLES OF BAFE₁₂O₁₉ BY CO- PRECIPITATION ROUTE USING CHLORIDE/NITRATE PRECURSORS

SHEIKHI MOGHADDAM K.

, ATAIE A.

Abstract: (28983 Views)

Ultra-fine particles of barium hexaferrite have been synthesized by co-precipitation method using barium nitride and iron chloride precursors with a Fe/Ba molar ratio of 11. Co-precipitation was carried out at 25 and 80°C using NaOH as a precipitant. Effect of coprecipitation and annealing temperatures on the phase composition and morphology of the products have been investigated using XRD and SEM, respectively. XRD results indicated existence of BaFeO3-x as a major phase in co-precipitated samples. Analysis of the XRD results also revealed that barium hexaferrite starts to form at a relatively low temperature of 700°C for sample synthesized at 80°C. SEM micrographs exhibit plate-like hexagonal particles of barium hexaferrite for calcined samples. The SEM results showed that the mean particle size of co-precipitated sample at 25°C is smaller than that of 80°C after calcining.

Keywords: CALCINATIONS, BARIUM HEXAFERRITE, X, RAY DIFFRACTION, CO, PRECIPITATION

Type of Study: Research Paper | Subject: Ceramics

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